Engine Error
P0378
Timing Reference High Resolution Signal B Intermittent/Erratic Pulses
Severity
High
Symptoms
Occasional stalling, hesitation on acceleration
Common Causes
- Loose connector on sensor B
- Wiring harness shorting out intermittently
- Failing sensor B
- Vibration issues
How to Fix
- 1 Secure electrical connector
- 2 Perform wiggle test and repair wire
- 3 Replace sensor B
- 4 Apply dielectric grease
Estimated Repair Cost
USD
$50
–
$400
Wiring repair: 100; Sensor: 200 - 400